Carbostyril (4-Quinolone Derivative) from China
Carbostyril derivatives serve as intermediates for aromatic amide drugs like fluoroquinolones. Classified under HTS 2924.29.62.50 as 'other' aromatic cyclic amides used in pharmaceuticals. Structure contains fused cyclic amide ring per chapter 29 specifications.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Register as Type II DMF for intermediates
• Declare synthetic route to avoid dual-use scrutiny